<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Promise API - reject</title>
</head>
<body>
    <script>
        // let p = Promise.reject(521);
        // let p2 = Promise.reject('iloveyou');
        let p3 = Promise.reject(new Promise((resolve, reject) => {
            resolve('OK');
        }));
        
        console.log(p3);
    </script>
</body>
</html>